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DEBT - Schedule of Long-Term Debt Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Jan. 30, 2024
Dec. 31, 2023
Unsecured Senior Notes | $600 million 4.000% - due January 30, 2024      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 600.0 $ 600.0  
Debt instrument, interest rate, stated percentage 4.00%    
Unsecured Senior Notes | $500 million 3.750% - due January 15, 2026      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 500.0    
Debt instrument, interest rate, stated percentage 3.75%    
Unsecured Senior Notes | $400 million 5.375% - due November 30, 2043      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 400.0    
Debt instrument, interest rate, stated percentage 5.375%    
Carrying Value      
Debt Instrument [Line Items]      
Long-term debt $ 1,257.5   $ 1,489.5
Carrying Value | Unsecured Senior Notes | $600 million 4.000% - due January 30, 2024      
Debt Instrument [Line Items]      
Long-term debt 0.0   599.9
Carrying Value | Unsecured Senior Notes | $500 million 3.750% - due January 15, 2026      
Debt Instrument [Line Items]      
Long-term debt 498.7   498.6
Carrying Value | Unsecured Senior Notes | $400 million 5.375% - due November 30, 2043      
Debt Instrument [Line Items]      
Long-term debt 391.2   391.0
Carrying Value | Floating rate credit facility      
Debt Instrument [Line Items]      
Credit facility capacity 2,000.0    
Line of credit facility, amount outstanding 367.6   0.0
Fair Value      
Debt Instrument [Line Items]      
Long-term debt 1,247.3   1,497.8
Fair Value | Unsecured Senior Notes | $600 million 4.000% - due January 30, 2024      
Debt Instrument [Line Items]      
Long-term debt 0.0   599.1
Fair Value | Unsecured Senior Notes | $500 million 3.750% - due January 15, 2026      
Debt Instrument [Line Items]      
Long-term debt 488.0   489.1
Fair Value | Unsecured Senior Notes | $400 million 5.375% - due November 30, 2043      
Debt Instrument [Line Items]      
Long-term debt 391.7   409.6
Fair Value | Floating rate credit facility      
Debt Instrument [Line Items]      
Line of credit facility, amount outstanding $ 367.6   $ 0.0